Abstract. The concept is a fundamental cognitive construct that plays a crucial role in human thought processes and the organization of knowledge. It serves as a mental representation of a category or an idea that enables individuals to generalize, classify, and make sense of the world around them. This abstract explores the nature of concepts as a form of thought, examining their characteristics, formation, and significance in human cognition. The abstract begins by elucidating the nature of concepts, emphasizing their role as mental representations that encapsulate shared features and attributes of objects, events, or ideas. It highlights the hierarchical structure of concepts, from basic-level categories to more abstract and complex ones. Furthermore, the abstract explores the relationship between concepts and language, illustrating how concepts provide the building blocks for linguistic expression and communication.